Extension to select Python interpreter / environment

[ghutchis]

Right now, the command to select the Python path is pretty basic.

Instead, it should allow user to choose through a widget which python interpreter to use (eg like in vscode).

Originally posted by @research11111 in #1391 (comment)

[ghutchis]

@adityaomar3 - this could use some help. Truthfully, I'm not sure how VS Code gets this list.

Basically, we want to build up a list of any copies of Python or environments on the computer for the user to select.

Some parts:

• Obviously, we can check PATH for multiple python and python3 and check their versions.
• If the users has conda or mamba installed: conda env list
• For virtualenv if available: lsvirtualenv or workon

I'm not sure for pipenv or venv if there's a good way to list all the environments.
I don't know much about pyenv either.

[ghutchis]

Ideally, I'd like to know how to put together this list with shell commands, like:

conda env list
lsvirtualenv
etc.

[research11111]

conda env list is done in the:
https://github.com/research11111/avogadrolibs/blob/dev-extensions/avogadro/qtplugins/plugindownloader/pythoncmdlineinterface.cpp#L96

[adityaomar3]

@research11111 can you help me figure out currently where this option is displayed on app

[research11111]

Currently it is only included on a failed merge request at #1417
with corresponding binary https://github.com/OpenChemistry/avogadrolibs/suites/17699467247/artifacts/1013285504
With commits of the merge request then the option is in menu Extensions/Manage.
Maybe if someone as time to include merge request work in main tree

[avo-bot]

This issue has been mentioned on Avogadro Discussion. There might be relevant details there:

https://discuss.avogadro.cc/t/managing-python/5098/1

[ghutchis]

I'm closing this based on #1562